The utility model belongs to the technical field of
oxygen generation and supply, and discloses a portable
oxygen generation
breathing device based on a membrane
separation technology. The
oxygen supply device is connected with a
breathing mask through an air delivery
pipe and comprises a shell, a power device is installed in the shell, the power device is coaxially connected with an oxygen generation device, the oxygen generation device comprises an air cylinder, the bottom of the air cylinder is connected with an air
storage tank through an air outlet end, and an
oxygen enrichment separation membrane is installed in the air outlet end. A first valve type one-way valve is mounted at a port of the air outlet end and is positioned at the bottom of the oxygen-enriched separation membrane; according to the oxygen-rich oxygen generator, oxygen-rich gas can be efficiently separated, the oxygen generation efficiency is improved, the purity of oxygen is ensured, and rich oxygen is ensured to be provided, so that the
adaptation and activity capability of an
organism in a low-pressure and low-oxygen environment in an oxygen-lean region is enhanced.